Quiz about Matrices Review Dimensions and Addition

Question 1

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

Accepted Answer

( 2 x 2 )

Answer

( 6 x 2)

Answer

( 2 x 6 ) )

Answer

( 3 x 2 )

Question 2

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

Accepted Answer

( 3 x 2 )

Answer

undefined

Answer

( 3 x 1 )

Answer

( 1 x 2 )

Question 3

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

Accepted Answer

undefined

Answer

( 3 x 1 )

Answer

( 3 x 2 )

Answer

( 3 x 3 )

Question 4

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

Accepted Answer

( 2 x 4 )

Answer

undefined

Answer

( 2 x 2 )

Answer

( 4 x 2 )

Question 5

Find the sum of both matrices.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 6

Perform the indicated operation

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Answer

not possible

Question 7

Dimensions?

Accepted Answer

a

Answer

b

Answer

c

Answer

d

Question 8

Question 8.

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 9

Dimensions?

Accepted Answer

a

Answer

b

Answer

c

Answer

d

Question 10

Find A + B

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 11

What is the value of the variable in the equation?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 12

Determine if you are finding the sum of an identity or opposite matrix then solve.

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 13

Determine if you are finding the sum of an identity or opposite matrix then solve.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 14

find: B*A

Youtube: Mattdoesmath

Video: Multiplying Matrices

Accepted Answer

47 309 5

Answer

17 1542 35

Answer

10 257 1

Answer

not possible because rows do not match columns

Question 15

The number of rows by the number of columns is called the __________ of a matrix .

Accepted Answer

dimensions

Accepted Answer

order

Answer

determinant

Answer

scalar

Question 16

What type of matrix has 1s along the main diagonal and 0s elsewhere?

Accepted Answer

identity matrix

Answer

zero matrix

Answer

square matrix

Answer

inverse matrices

Question 17

What type of matrix has the same number of rows and columns?

Accepted Answer

square matrix

Answer

zero matrix

Answer

identity matrix

Answer

inverse matrices

Question 18

A(n) ____________ is a rectangular arrangement of numbers into rows and columns.

Accepted Answer

matrix

Answer

square

Answer

identity

Answer

scalar

Question 19

The commutative property holds true for which matrix operation?

Accepted Answer

addition

Answer

subtraction

Answer

multiplication

Answer

division

Matrices Review Dimensions and Addition

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